Synonym: ad lib, ad libitum, ad-lib, extemporaneous, extemporary, extempore, off-the-cuff, offhand, offhanded, spontaneously, unrehearsed. Similar words: prompt, compromise, uncompromising, improper, improved, improvise, improvised, improbable. Meaning: [ɪm'prɑmptuː /-'prɒmptjuː] 
n. 1. an extemporaneous speech or remark 2. a short musical passage that seems to have been made spontaneously without advance preparation. adj. with little or no preparation or forethought. adv. without advance preparation.
n. 1. an extemporaneous speech or remark 2. a short musical passage that seems to have been made spontaneously without advance preparation. adj. with little or no preparation or forethought. adv. without advance preparation. 
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31. Gaffney had no qualms about presenting his dances at school assemblies and in impromptu cafeteria performances.
32. It's quite feasible that your chipset has suffered a bit of impromptu reprogramming.
33. I could then have pretended to notice him for the first time and have engaged him in conversation in an impromptu manner.
34. Schwarm disputed the witness' story last week in an impromptu press conference outside court.
35. But if friends descended, would you be ready to rustle up an impromptu supper?
36. The Krugers threw an impromptu cocktail party for him in the backyard.
37. Impromptu teams are picked on the spot, with a knowledgeable captain to ensure a balance.
38. The impromptu concerts have been written up in national magazines and people travel hundreds of miles to take part in the fun.
39. The drunken revel of the Roman leaders has the right air of impromptu festivity.
40. She played a tune impromptu.
41. They presented impromptu items to greet the distinguished guests.
42. And the activity, each activity impromptu over the summary.
43. A witty impromptu must not sound premeditated.
44. Franz Schubert. Impromptu 2 In Eb Minor.
45. Blooms of wildflowers sprout a bouquet of impromptu beauty.
46. The President gave an impromptu press conference.
47. We're having an impromptu meeting!
48. No diplomatic language was needed. A few impromptu fairy tales were enough.
49. The cream of enjoyment in this life is always impromptu. The chance walk; the unexpected visit; the unpremeditated journey; the unsought conversation or acquaintance.
50. Hello feed, bathe, grouch..." happy " pet make impromptu comic gestures and remarks, garrulous speaks all is perfectness,(www.Sentencedict.com) raise differently to you absolutely bestow favor on an experience.
51. As the wave falls , the arc creates an impromptu seating area for the interior Event Space.
52. While spontaneity is fun – who doesn't love an impromptu mojito night? – the more time you give people to RSVP and for you to prepare the house, the more relaxed you'll be on the day of the party.
53. Impromptu painting is a particular graphics artistic expression of the Chinese nation.
54. The impromptu pianist is Maximilian White, an Italian living in London.
55. Piano accompaniment for vocal music falls into two types: impromptu and written.
56. There are four basic methods of delivering a speech:reading verbatim from a manuscript, reciting a memorized text, speaking with PowerPoint, and speaking extemporaneously, or impromptu.
57. Haiti's streets have become impromptu morgues, with grief-stricken survivors lining roads with bodies even as trapped survivors continue to scream for help.
58. They play an impromptu guerilla gig on the Beijing subway.
59. The following day Coetsee paid an impromptu unannounced visit to the world's most famous political prisoner.
60. A make-shift fireworks stall seems to have erupted into the street...an impromptu parking lot.
More similar words: prompt, compromise, uncompromising, improper, improved, improvise, improvised, improbable, improbably, improvement, improvident, improvisation, sumptuous, presumptuous, contemptuous, contemptuously, exempt from, comprise, compress, impress, imprint, romp, imprison, compressor, comprehend, comptroller, imprudent, imprisoned, imprecise, compression.